A square or slightly rectangular brilliant with rounded corners — like a pillow. Predates the round brilliant: the cushion descends from the 18th-19th century 'old mine cut' shaped to maximize light return under candlelight rather than electric. Soft, antique-reading, the alternative to round on engagement stones since the early 2000s for couples wanting period feel.
Modified square brilliant, 58–64 facets, rounded corners (curve radius ~10–15% of side length). Two main families: 'standard cushion' (Crowningshield-era proportions, larger table, fewer facets, antique read), and 'cushion brilliant' (modern, smaller table, more facets, more spread / brilliance). Length-to-width 1.00–1.15 typical. Optimum proportions: table 56–66%, depth 60–70%, crown 11–15%. The old-mine ancestor was hand-cut from rough water-worn diamonds; modern cushion is sawn-rough optimized. Pairs with vintage halo / pavé settings; the cushion's softness reads correct alongside small accent stones.
character — soft pillow brilliance, antique register, candlelight-tier glow, vintage-favoring.
GIA Diamond Grading and Identification literature; AGS American Gem Society cut-grading standards.
House vocabulary — terms ForMatter uses with intent.
Materials and processes for people who design and make things.
A local-first library of materials, processes, applications, and finishes — equal weight, citable everywhere, so a student can move from "what is this" toward "what's actually buildable here, now, by me." Part of the renato.design ecosystem — sibling of Plenum, Specimen, Ingenue, gesture, graf, and the Renato Rhino plug-ins. Form and matter, inseparable.
Half of teaching materials is teaching how the material is made into the thing. The standard subscription library was always light on that half. The wedge here isn't better samples or a prettier interface — it's treating Process as a peer entity, not a footnote.
Conway, Lefteri, Forty, Sparke, ASM, GIA. Every voice: Voices.
Local to this browser. No telemetry.